80748880

素因数分解:

$2^4\times 5^1\times {\mathrm{1009361}}^1$

素因数の和:1009374

約数の個数: 20

約数和(自身を含む): 187741332

約数和(自身を除く): 106992452

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1009361, 2018722, 4037444, 5046805, 8074888, 10093610, 16149776, 20187220, 40374440, 80748880]

約数ペア:

[(1, 80748880), (2, 40374440), (4, 20187220), (5, 16149776), (8, 10093610), (10, 8074888), (16, 5046805), (20, 4037444), (40, 2018722), (80, 1009361)]